Home / 6,982.58-9,636.80-3,999.38

Finding the Fourth Proportional to 6,982.58, 9,636.80 and 3,999.38

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Solution

The fourth proportional to 6,982.58, 9,636.80 and 3,999.38 is: 5,519.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,982.58 : 9,636.80 = 3,999.38 : x
  2. Step 2: Convert to fraction form
    6,982.58/9,636.80 = 3,999.38/x
  3. Step 3: Cross multiply
    6,982.58x = 9,636.80 × 3,999.38
  4. Step 4: Simplify right side
    6,982.58x = 38,541,225.18
  5. Step 5: Solve for x
    x = 38,541,225.18/6,982.58
  6. Step 6: Final answer
    x = 5,519.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.